KR101828455B1 - Water Circulating Apparatus - Google Patents

Abstract

The present invention relates to a water circulation apparatus for removing algae having a rigid underwater fixation member. By having a submersible buoyant body which is submerged in water in an attempt to secure buoyancy, it is possible to prevent interruption in the flow of circulating water due to existing buoyant bodies, increase balance maintainability through adjustment of ballast water among a plurality of submersible buoyant bodies, and suppress instant introduction of circulating water by means of an impeller. In addition, the water circulation apparatus of the present invention also brings a remarkable increase in stability regarding installation even when rapid water level fluctuation and wave formation above water take place.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water circulating apparatus for a bird's water removal system having a buoyant buoyant body of a ballast water system and a water-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water circulation apparatus for floating water on a water surface for the purpose of purification and improvement of water quality such as algae removal in rivers, So that it is possible to prevent the occurrence of disturbance in the flow of water circulation due to the conventional floating body and to improve the equilibrium maintaining performance through the adjustment of the equilibrium water between the plurality of submersible buoyant bodies, Descending water type underwater immobilization member capable of preventing instantaneous inflow of water from the water surface and generating a swell in the water surface and a sudden change in the water level, .

In the summer, algae growth in rivers and lakes becomes severe, resulting in health hazards, odors, and aesthetic stress. Considering the spatial characteristics of having a large area such as rivers, lakes, etc., a water circulation system equipped with a motor and a propeller is installed in the corresponding river to induce artificial water flow, thereby suppressing the growth of algae in the river .

Korean Patent No. 10-1707140 discloses a water circulation apparatus according to the prior art. In the conventional water circulation apparatus, a float that floats on the water surface to secure buoyancy, And a tuber for forcedly flowing water upward. Turbulators are commonly referred to as "impellers ".

However, in the case of the water circulation apparatus according to the related art, since the floating body for securing the buoyancy is formed in a cylindrical or spherical shape, and a part of the lower side is provided below the water surface and the upper layer is provided on the water surface, Is a factor that hinders the water circulation function by interfering with the diffusion of the water flow. Further, in the conventional water circulation apparatus, there is a problem that it is difficult to maintain the overall balance of the water circulation apparatus due to the difference in buoyancy between a plurality of float.

Particularly, since the water circulation device is installed on the water surface, the water circulation device reacts sensitively to changes in flow characteristics of rivers and the like and changes in the water level of rivers. In the prior art disclosed in Korean Patent No. 10-1707140, There is no consideration for the configuration. Anchor and chain (or cable) used to anchor the ship to fix the water circulation device may be used, but in the case of a chain or cable that only supports tensile force, when a sudden drop in water level occurs, It becomes longer than that required for fixing the circulating device, and there is a problem that the fixing performance of the water circulating device is deteriorated as well as the tangling of the chain occurs.

Further, in the case of the impeller provided in the conventional water circulation device, the phenomenon that the water that has risen upward is sucked back to the lower end of the impeller has occurred because the impeller concentrated on only the function of sucking up the water and raising it. In such a conventional water circulation apparatus, there is a phenomenon in which water is sucked upwards and water does not spread widely, and an instant re-inflow phenomenon occurs in the circulating water circulating repeatedly only in the vicinity of the impeller. Therefore, It has problems that can not be exercised.

Korean Patent Registration No. 10-1707410 (issued on February 17, 2017).

The present invention relates to a water circulation apparatus installed for removing algae that cause green tide in rivers, lake water, etc., and solves the problem of disturbance of water flow due to the provision of conventional cylindrical or spherical float, This is because of the lack of performance and malfunction of the water level / water flow characteristic change and the occurrence of tangling phenomena. Furthermore, due to the immediate re-inflow of the circulating water that is sucked up by the impeller and sucked back to the bottom of the impeller And aims at solving the problem of water flow diffusion inhibition phenomenon.

In order to achieve the above object, according to the present invention, there is provided a water circulation apparatus (100) installed to float on a water surface to forcibly circulate water, the water circulation apparatus A plurality of submersible buoyant bodies (1) generating buoyancy against the apparatus (100); A frame 6 comprising a plurality of branch beams 60 positioned above the water surface and extending to a vertically upward position of the plurality of submerged buoyant bodies 1; A connecting member 2 for connecting the respective submersible buoyant body 1 and each branch beam 60 of the frame 6 by connecting them together; And an impeller (4) located below the center of the frame (6) below the water surface and sucking water from the bottom by rotation and spilling upward through the top; The submerged buoyant body (1) is made of a tubular member whose hollow is hollow and has a vertical cross-sectional shape of an elliptical shape. The major axis of the elliptical shape is a direction in which water is diffused from the impeller (4) Are arranged side by side; A ballast connection pipe 11 is horizontally disposed between the plurality of submerged buoyant bodies 1 so that neighboring submerged buoyant bodies 1 are connected to communicate with each other to thereby inject a ballast water into the submerged buoyant body 1. [ And the ballast water is supplied to the submerged buoyant body (1) through the ballast connection pipe (11) when the water supply is completed.

In the water circulation apparatus (100) of the present invention, the impeller (4) is made of a cylindrical body and a rotary blade is provided on the upper part thereof; The body of the impeller 4 may further have a tapered lower end extending portion 40 in which the cross-sectional diameter of the impeller 4 is gradually reduced downward while suppressing the immediate re-inflow of the circulating water. .

The water circulation apparatus (100) of the present invention further includes a lifting and descending underwater fixing member (7) for maintaining the installation position of the water circulation apparatus (100); Descending type underwater fixing member 7 includes a rod member 71 vertically penetrating through the frame 6 and a weight 72 coupled to a lower end of the rod member 71; The horizontal displacement of the frame 6 through which the rod member 71 penetrates is controlled in a state in which the weight 72 is located on the water floor and the rod member 71 is vertically erected, 6 may be allowed to rise and fall.

In addition, in the water circulation apparatus 100 of the present invention, the connecting member 2 has a shape in which an elliptical long axis extends in a direction in which water is diffused from the impeller 4 so as not to interfere with the water circulation flow And a further buoyancy is generated by the connecting member (2); The auxiliary buoyant body (8) is further provided with a hollow buoyant body (8) which is formed of a hollow member and generates an additional buoyancy force, on the surface opposite to the surface facing the impeller (4) (8) is not protruded beyond the width of the connecting member (2) when viewed in the direction in which the water is diffused in the water pipe (4).

In the water circulation apparatus of the present invention, when the submerged buoyant force generating buoyancy is submerged in the water below the water surface, when the water flow is diffused to diffuse the water flow, unlike the prior art, the water flow diffusion disturbance due to the submerged buoyant body So that the water circulation function can be smoothly performed.

Particularly, when the ballast pipe is arranged horizontally and the neighboring submerged buoyant bodies are connected to each other, the equilibrium maintenance function by the submerged buoyant body is significantly improved when the ballast water is injected into the submerged buoyant body So that the floating state of the water circulation device can be maintained very stably.

In addition, in the water circulation apparatus of the present invention, it is possible to secure sufficient buoyancy while reducing the disturbance of the water flow through the connecting member connecting the submersible buoyant body and the frame of the aquarium and the auxiliary buoyant body installed on the back surface of the connecting member .

Further, in the water circulation apparatus of the present invention, the impeller is made of a cylindrical body having a lower end which is submerged in water and which is elongated in the vertical direction, and in particular, the lower end extended portion extending to the lower end is gradually downward It is possible to suppress the immediate re-inflow of the circulating water very effectively, thereby solving the conventional problem that the water is repeatedly circulated only in the vicinity of the impeller, and the water circulation and accordingly The effect of inhibiting the growth of algae can be effectively exhibited.

In addition, according to the present invention, since the position of the water circulation device is fixed by the vertical-lifting underwater fixing member which is made of a rigid body that keeps the vertical arrangement intact and further allows the frame to move up and down naturally according to the water level change, The problem of the tangling of the chain, the deterioration of the fixing performance, and the like can be prevented. In addition, the horizontal position of the frame can be maintained very stably and the installation stability of the water circulation device can be greatly improved.

1 is a schematic side view showing a water circulation apparatus according to the present invention installed on a river;
FIG. 2 and FIG. 3 are schematic perspective views showing the water circulation apparatus according to the present invention, respectively, in different directions.
4 is a schematic plan view of the water circulation apparatus of the present invention shown in Fig.
FIG. 5 is a schematic enlarged view of the circle A of FIG. 2 showing a configuration in which a diverging buoyant body and a branch beam of a frame are integrally connected by a connecting member.
Fig. 6 is a schematic enlarged view corresponding to Fig. 5 showing a state in which the preliminary buoyant member is separated from the connecting member.
7 is a schematic perspective view of an impeller provided in the water circulation apparatus of the present invention and an impeller according to the related art.
FIG. 8 is a schematic side view of an impeller provided in the water circulation device of the present invention and an impeller according to the prior art.
9 is a schematic perspective view of a lifting / descending type underwater fixing member.
10 is a schematic side view of a lifting / descending type underwater fixing member.
11 is a schematic enlarged view of the circle B portion of Fig. 3 showing that the ascending / descending type underwater fixing member of Fig. 9 is coupled to the frame; Fig.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Although the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that the technical idea of the present invention and its essential structure and operation are not limited thereby. The water circulation apparatus according to the present invention can be installed on the water surface in any place where algae need to be removed, such as an artificial pond such as a lake in which water is confined, or a fish pond, as well as a river in which water is drained. Therefore, the term "river" in this specification refers to a place where the use of the water circulation apparatus according to the present invention is required, such as a lake, natural or artificial pond or other water tank, . In addition, the water circulation apparatus of the present invention is not only used for the purpose of removing algae but can be used for purification and improvement of water quality and various other purposes.

FIG. 1 is a schematic side view showing a water circulation apparatus 100 according to the present invention installed in a river. FIGS. 2 and 3 show a water circulation apparatus 100 according to the present invention, And a perspective view showing a perspective view of the display device according to the present invention.

As shown in the drawings, a water circulation apparatus 100 according to the present invention includes a plurality of submerged buoyant bodies 1 that are submerged in water to generate buoyancy, and a plurality of submerged buoyant bodies 1, A frame 6 composed of a plurality of branch beams 60 extending to a vertically upward position of the main body 1 and a branch beam 6 of the upper end of each submerged buoyant body 1 and the branch beams An impeller 4 positioned below the center of the frame 6 to draw water from the lower end by rotation and to rise above the water surface through the upper end of the frame 6, And a weight member 72 provided at a lower end of the rod member 71. The rod member 71 is disposed vertically through the frame 6, . As shown in Figs. 2 and 3, if necessary, an additional auxiliary buoyant body 8 may further be provided on the rear surface of the connecting member 2 in the water diffusion direction.

Fig. 4 is a schematic plan view of the water circulation apparatus 100 of the present invention shown in Fig. 5 shows a schematic enlarged view of the circle A of FIG. 2 showing a configuration in which the submersible buoyant body 1 and the branch beams 60 of the frame 6 are integrally connected by the connecting member 2 Fig. 6 is a schematic enlarged view corresponding to Fig. 5 showing the state in which the auxiliary buoyant body 8 shown in Fig. 5 is separated from the connecting member 2. Fig.

In the present invention, the frame 6 is a member arranged horizontally above the water surface, and extends in the vertical direction of each submerged buoyant body 1 in accordance with the number of the submerged buoyant bodies 1 provided in the water circulation apparatus 100 And a plurality of branch beams 60 are provided. In the embodiment shown in Figs. 2 to 4, since the three submersible buoyant bodies 1 are provided so as to exist at the respective corner points of the triangle, the frame 6 is also horizontally extended from the center point of the triangle toward each corner point And three branch beams 60, which are the same as those shown in FIG. Equipment such as a motor 9 for applying a rotational force to the impeller 4 is mounted on the upper portion of the center point of the frame 6 composed of the three branch beams 60.

The impeller 4 receives the rotational force from the motor 9 by the power transmitting shaft 91. The impeller 4 is rotated by the impeller 4, 4) so as to flow upward through the upper end of the impeller (4). The water spouted out from the upper end of the impeller 4 radially spreads from the position of the impeller 4, that is, the position below the center point of the frame 6. For the sake of convenience, in this specification, the direction in which the water spreads from the position below the center point of the frame 6 to the radially outer side, that is, the direction in which water is diffused from the impeller 4 is referred to as the "diffusion direction". Therefore, the direction indicated by the arrow X1 in Fig. 4 becomes the diffusion direction. Conversely, the direction in which water is gathered radially inward toward the impeller 4, that is, the direction opposite to the diffusion direction is referred to as "converging direction ". In this specification, the center point of the frame 6 in the diffusion direction or the surface facing the impeller 4, that is, the center point of the frame 6 or the surface facing the impeller 4 is referred to as & The face in the opposite direction is referred to as "back face ".

The water circulation apparatus (100) according to the present invention is provided with a plurality of submerged buoyant bodies (1) in order to generate buoyancy to float the water circulation apparatus (100). In the present invention, the submergible buoyant body (1) is provided so as to be submerged completely in water. When water is diffused in the diffusion direction or water is sucked in the converging direction toward the impeller (4) In order to minimize disturbance of the flow, the submerged buoyant body (1) has a tubular member having an elliptical vertical section ("vertical section") shape in which the long axis is parallel to the diffusion direction or the converging direction . That is, the submersible buoyant body 1 is formed of a tubular member whose hollow is hollow, and its vertical cross-sectional shape is elliptical. Particularly, the long axis of the elliptical shape is parallel to the diffusion direction or convergence direction. It is preferable to be provided so as to be completely locked.

The connecting member 2 is coupled to the upper end of the submergible buoyant body 1 and the upper end of the connecting member 2 is connected to the branch beam 60 of the frame 6 extending above the submerged buoyant body 1 Lt; / RTI > That is, each of the submersible buoyant members 1 is integrated with the frame 6 by the connecting member 2. The buoyant force of the submerged buoyant body 1 is transmitted to the frame 6 by the connecting member 2 in a state where the submerged buoyant body 1 is immersed in the water below the water surface, A sufficient buoyancy required for use of the water circulation apparatus 100 can be secured.

As described above, in the present invention, the submerged buoyant body 1 generating buoyancy is submerged in the water below the water surface, so that the water is sucked or ejected by the impeller 4, Unlike the prior art, the disturbance of water flow diffusion at the water surface due to the submerged buoyancy body 1 is minimized, and thus the water circulation function is smoothly performed. Particularly, when the submersible buoyant body 1 has an elliptical vertical section in which the long axis of the elliptic shape is parallel to the diffusion direction or the converging direction as described above, A very effective effect is obtained in which the disturbance due to the vibration is minimized.

In the case of having a plurality of submerged buoyant bodies 1, as shown in the figure, it is possible to use a ballast connecting pipe 11 to have a configuration for communicating the inside of the plurality of submerged buoyant bodies 1 with each other. That is, the ballast pipe 11 is horizontally arranged to connect the neighboring submerged buoyant bodies 1 so as to communicate with each other. According to this configuration, when the ballast water is injected into the submerged buoyant body 1 and filled in, the ballast water is supplied to the neighboring submerged buoyant body 1 through the ballast connection pipe 11 to form a plurality of submerged buoyant bodies The water level of the water introduced into the water circulation apparatus 1 can be maintained to be equal to each other, and thus the balance holding function by the submersible buoyant body 1 can be greatly improved and the floating state of the water circulation apparatus 100 can be maintained very stably There are advantages. In particular, in terms of the overall configuration of the water circulation apparatus 100, there is a horizontal frame 6 in the water phase and a horizontal ballast connection pipe 11 in the water, Since the water circulation device 100 is provided with the water circulation device 100, the stability of the water circulation device 100 is greatly improved.

In the present invention, the connecting member 2 may be made of a simple beam member, but it is also preferable that the connecting member 2 is made of a hollow pipe member. When the connecting member 2 is made of a pipe member hollowed out in this way, additional buoyancy is generated by the connecting member 2 when a part of the connecting member 2 is immersed in water. That is, the advantageous effect that the connecting member 2 can also function as an additional buoyant body is exhibited. Particularly when the connecting member 2 is formed of a pipe-shaped member, when the lower end of the connecting member 2 is coupled to the upper end of the submerging buoyant body 1, the inside of the connecting member 2 and the submerged buoyant body 1, It is also possible to configure such that the inner portions of the first and second plates are communicated with each other.

Also, in order to minimize interference of the water flow due to the installation of the connecting member 2, the connecting member 2 is also made of a member having an elliptical vertical cross-sectional shape in which the long axis of the ellipse is parallel to the diffusion direction or the converging direction . The vertical cross-sectional shape of the connecting member 2 may be made elliptical in this way, not only in the case where the connecting member 2 is formed of a pipe member but also when the connecting member 2 has a simple beam shape.

On the other hand, if necessary, the position of the back surface of the connecting member 2 in the diffusion direction, that is, the surface (back surface) opposite to the surface facing the impeller 4 in the connecting member 2, May be assembled to the connecting member 2 or the submersible buoyant body 1. Preferably, the preliminary buoyant body 8 is made of a hollow member for generating buoyancy, and it is preferable that the preliminary buoyant body 8 is not protruded beyond the width of the connecting member 2 in the diffusion direction. That is, the preliminary buoyant body 8 is provided on the back surface of the connecting member 2 in the diffusion direction. It is preferable that the width of the preliminary buoyant body 8 in the direction perpendicular to the diffusion direction is not more than the width of the connecting member 2, It is advantageous to prevent the water from diffusing in the diffusion direction. The shape of the preliminary buoyant body 8 is not limited to that shown in the drawings and can be modified in other forms if the condition (condition that the width of the preliminary buoyant body is equal to or less than the width of the connecting member in a direction perpendicular to the diffusion direction) Do.

The impeller 4 is disposed below the center of the frame 6 so that the impeller 4 is positioned below the water surface and sucks the water from the bottom by rotating the water so that the impeller 4 spouts through the upper surface to rise above the water surface, (6) in the diffusion direction. Fig. 7 is a schematic perspective view of an impeller 4 of a water circulation apparatus 100 of the present invention and a conventional impeller. Fig. 8 is a schematic view of the water circulation of the present invention shown in Fig. 7 A schematic side view of the impeller 4 provided in the apparatus 100 and the impeller according to the prior art are respectively shown. Figures 7 (a) and 8 (a) are for the impeller 4 of the present invention, and Figures 7 (b) and 8 (b) are for a prior art impeller.

The impeller 4 according to the present invention is formed of a cylindrical body and has a rotating blade on its upper part. This configuration (including the cylindrical body and the rotating blades) of the impeller 4 provided in the present invention is the same as that of the prior art impeller shown in Figs. 7 (b) and 8 (b). However, in the case of the impeller 4 of the present invention, the cylindrical body is longer in the vertical direction than the conventional impeller. 7 and 8 (a) and 8 (b), the impeller 4 of the present invention has a cylindrical body having a lower end extension 40 in addition to a conventional impeller I have. In particular, the lower extension portion 40 has a tapered cylindrical shape in which the cross-sectional diameter gradually decreases while moving downward. In the conventional impeller having a very short vertical length, as shown in Figs. 7 and 8 (b), the phenomenon that water rising to the upper end is sucked back to the lower end of the impeller has occurred, The water can not spread widely and circulates repeatedly only in the vicinity of the impeller so that the effect of inhibiting the growth of algae due to water circulation can not be efficiently exhibited. However, in the case of the impeller 4 of the present invention having the lower extension portion 40 as shown in Figs. 7 and 8 (a) and having a shape longer than the conventional impeller in the vertical direction, It is possible to effectively prevent the water, which has been blown through the top of the impeller and has risen above the water surface, from being repeatedly reintroduced into the lower end of the impeller 4 again. That is, the instantaneous re-inflow of the circulation water can be effectively suppressed. Accordingly, it is possible to solve the conventional problem that the water is repeatedly circulated only in the vicinity of the impeller, and the water circulation and thus the effect of inhibiting the growth of the algae can be exerted very efficiently.

Particularly, since the lower extension portion 40 is tapered so as to have a smaller section as it goes downward, the side surface of the lower extension portion 40 is inclined so that the lower extension portion 40 formed at the lower end of the impeller 4 The water flowing toward the open hole can not easily flow into the lower extension portion 40 but flows naturally along the inclined side surface of the lower extension portion 40 and flows in the diffusion direction away from the impeller 4. That is, due to the shape of the tapered lower extension 40, it is possible to very effectively restrain the water around the impeller from being repeatedly introduced into the impeller, and to induce the flow to be easily distanced from the impeller 4 will be.

The water circulation apparatus (100) of the present invention is provided with an ascending and descending type underwater fixing member (7) for preventing the water circulation apparatus (100) from being floated and also actively responding to a change in water level Respectively.

And a weight member 72 provided at a lower end of the rod member 71. The rod member 71 is disposed vertically through the frame 6, . Fig. 9 is a schematic perspective view of the lifting and lowering type underwater fixing member 7, Fig. 10 is a schematic side view of the lifting and lowering type underwater fixing member 7, and Fig. There is shown a schematic enlarged view of the circle B portion of Fig. 3 showing that the member 7 is coupled to the frame 6. Fig. 11, the dotted line shows a state before the ascending / descending type underwater fixing member 7 moves up and down.

As shown in the figure, the water-lifting submersible underwater fixing member 7 provided in the water circulation apparatus 100 of the present invention comprises a vertical rod member 71 and a heavy weight provided at the lower end of the rod member 71 (72). The rod member 71 of the ascending / descending type underwater fixing member 7 passes through the branch beam 60 of the frame 6. [ The branching beam 60 can be lifted up and down along the rod member 71 in the vertical direction with the rod member 71 passing through the branching beam 60. [ In the case of the embodiment illustrated in the figure, there are three branch beams 60 of the frame 6 in the direction of each vertex of the triangle at the center point of the frame 6, and for each branch beam 60, (7). The weight 72 is made of concrete or the like and is placed on the floor in the water or is buried in the water floor at a predetermined depth by the weight of the weight 72. Thus, the lifting and lowering type underwater fixing member 7 is fixed in a predetermined position Respectively.

As described above, the rod member 71 of the ascending / descending underwater fixing member 7 passes through the branch beam 60 of the frame 6, and the branch beam 60 extends in the vertical direction along the rod member 71 When the water level fluctuates in the river where the water circulation apparatus 100 is floated, the frame 6 is lifted and lowered naturally in accordance with the change in the water level in a state where the frame 6 is embedded in the lifting and lowering water fixing member 7 It becomes strong. That is, the vertical movement of the frame 6 in the horizontal direction by the lifting and lowering type underwater fixing member 7 is prevented, but the upward / downward movement according to the water level change is naturally permitted. The water circulation apparatus 100 according to the present invention is different from the conventional art in which a member such as a cable or a chain is merely moored using a member that only supports a tensile force without properly maintaining the shape thereof, And the position thereof is fixed by the lifting and lowering underwater fixing member 7 which allows the frame 6 to rise and fall naturally according to the water level change. Therefore, the problem of the tangling phenomenon of the chain, It is possible to maintain the horizontal position of the frame 6 in a very stable manner and thus the installation stability of the water circulation apparatus 100 can be greatly improved.

The rod member 71 of the ascending and descent type underwater fixing member 7 passes through the connecting member 2 and the submerged buoyant body 1 and is guided to the branch beam 60 of the frame 6, The position where the rod member 71 is installed is not limited to this and the branching beam 60 may be installed at a position where the connecting member 2 and the buoyant buoyant body 1 are not installed It can be done.

On the other hand, the rod member 71 of the lifting and lowering type underwater fixing member 7 may have a structure capable of adjusting the vertical length thereof. For example, a plurality of rods may be connected and assembled by a bolt fastening method, The vertical length of the rod member 71 may be adjusted as necessary. Of course, the vertical length of the rod member 71 may be adjusted in a manner other than the exemplified configuration. In the drawing, reference numeral 73 denotes a warning lamp 73 installed at the upper end of the rod member 71 so as to confirm the installation point of the ascending / descending type underwater fixing member 7. Although not shown in the drawing, a solar power generator may be installed in the water circulation apparatus 100, if necessary, to secure power for the warning lamp 73 through the solar power generator.

1: submersible buoyant body
2:
4: Impeller
6: frame
8: Spare buoyancy
60: branch beam
71: rod member
72: Weight
100: Water circulation device

Claims (5)

1. A water circulating device installed so as to float on a water surface to forcibly circulate water,
A plurality of submerged buoyancy bodies that are fully submerged in water to prevent water circulation flow, generating buoyancy for the water circulation device;
A frame including a plurality of branch beams positioned above the water surface and extending to a vertically upward position of the plurality of submersible buoyant bodies;
A connecting member for connecting each of the submerged buoyant bodies and each of the branch beams of the frame by connecting them together;
And an impeller positioned below the center of the frame below the water surface to draw water upward from the bottom by swirling the water from the bottom by rotation;
A ballast connection pipe is disposed between the plurality of submerged buoyant members so that neighboring submerged buoyant members are connected to communicate with each other. Thus, when ballast water is injected into the submerged buoyant member for filling, the submerged buoyant member The ballast water is supplied;
Wherein the submerged buoyant body is formed of a tubular member having a hollow and a vertical cross-sectional shape of an elliptical shape, wherein the elliptical vertical axis of the submerged buoyant body is formed such that the major axis of the elliptical shape rises upward from the upper end of the impeller, The submersible buoyant body is arranged so as to be parallel to the direction of spreading;
The connecting member is made of a pipe member having an oval vertical cross-sectional shape, so that additional buoyancy is generated by the connecting member. In order to prevent the connecting member from interfering with the flow of the water circulation, The connecting member is arranged such that an elliptical long axis of the impeller rises upward from the upper end of the impeller and is parallel to a direction in which water is radially outwardly diffused;
Wherein a surface of the connecting member opposite to the surface facing the impeller is further provided with a preliminary buoyant member which is made of a hollow member and generates additional buoyancy, the width of the preliminary buoyant member being less than the width of the connecting member. Device.
delete The method according to claim 1,
Further comprising a lifting and descending underwater fixing member for maintaining the installation position of the water circulation device,
Wherein the ascending / descending type underwater fixing member includes a rod member vertically installed through the frame and a weight coupled to a lower end of the rod member;
Characterized in that the frame has a configuration in which the horizontal displacement of the frame through which the rod member passes is allowed to rise and fall in accordance with a change in the water level in a state where the weight body is located on the water floor and the rod member is vertically erected circulator.
The method according to claim 1,
Wherein the impeller is made of a cylindrical body and has a rotating blade at an upper portion thereof;
Further comprising a tapered lower end extending downwardly from the body of the impeller so as to reduce the cross-sectional diameter of the impeller gradually so as to suppress immediate re-inflow of the circulating water. delete

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